Motional Squeezing for Trapped Ion Transport and Separation

Sutherland, Robert T.; Burd, S. C.; Slichter, D. H.; Libby, S. B.; Leibfried, D.

doi:10.1103/physrevlett.127.083201

Motional Squeezing for Trapped Ion Transport and Separation

Journal Article · Fri Aug 20 00:00:00 EDT 2021 · Physical Review Letters

DOI:https://doi.org/10.1103/physrevlett.127.083201· OSTI ID:1820544

^[1]; Burd, S. C. ^[2]; ^[3]; ^[4]; Leibfried, D. ^[3]

Univ. of Texas at San Antonio, TX (United States)
National Inst. of Standards and Technology (NIST), Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States)
National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Transport, separation, and merging of trapped ion crystals are essential operations for most large-scale quantum computing architectures. In this Letter, we develop a theoretical framework that describes the dynamics of ions in time-varying potentials with a motional squeeze operator, followed by a motional displacement operator. Using this framework, we develop a new, general protocol for trapped ion transport, separation, and merging. We show that motional squeezing can prepare an ion wave packet to enable transfer from the ground state of one trapping potential to another. Here, the framework and protocol are applicable if the potential is harmonic over the extent of the ion wave packets at all times. As illustrations, we discuss two specific operations: changing the strength of the confining potential for a single ion and separating same-species ions with their mutual Coulomb force. Both of these operations are, ideally, free of residual motional excitation.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1820544

Report Number(s):: LLNL-JRNL--820105; 1031023

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 8 Vol. 127; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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